Free full text: https://link.springer.com/chapter/10.1007/978-3-030-46184-3_2 Looks like it could be quite annoying
I'm afraid that Abstract makes my skin crawl. It seems to suggest that the first and most important duty of the paediatrician is to put in place a mental health diagnosis, and the issue of checking for treatable disease is an afterthought.
The paper title sounds like a book for children. And the wording here suggests one or the other - the paediatrician can diagnose a functional somatic symptom or they can direct the child and family onto a path toward health and well-being.
Underpinned by the idea that a mental health diagnosis, or treatment, inappropriately applied can't harm.
That's what happens when disease progresses. Best to diagnose and treat it early and not waste time with magical psychosomatic thinking.